Saw-sharpening apparatus.



PATENTED JULY 24, 1906.

C. H. REYNOLDS. SAW SHARPBNING APPARATUS.

APPLICATION FILED JUNE 14, 1905.

3 SHEETS-SEEET l.

PATENTED JULY 24, v1906.

G. H. REYNOLDS. SAW SHARPENING APPARATUS.

APPLICATION FILED JUNE 14, 1905.

3 SHEETS-*SHBET 2.

THE NdRRIS PETERS ca., WASHINGTON, n. c,

N0- 826,964. PATENTED JULY 24, 1906.

. 0. H. REYNOLDS.

- SAW SHAEPENING APPARATUS.

APPLIOATION FILED JUNE14, 1905.

3 SHEETS-SHEET 3.

E u awentoz WWW 3 CfiarZdffifZey/zolds i, No. 826,964.

PATENT OFFICE.

CHARLES H. REYNOLDS, OF MILAN, MISSOURI.

SAW-SHARPENING APPARATUS.

Specification of Letters Patent.

Patented July 24, 1906.

Application filed June 14,1905. Serial No. 265,247.

To all whom it may concern.-

. Be it known that I, CHARLES H. REYNOLDS,

" a citizen of the United States of America, re-

siding at Milan, in the county of Sullivan and State of Missouri, haveinvented new and useful Improvements in Saw-Sharpening Apparatus, ofwhich the following is a specification.

This invention relates to a saw-sharpening apparatus, the object of theinvention being to provide a saw-filing device by which either hand orband saws may be accurately, con

' veniently, and expeditiously filed to the desired depth and angle andin which provision is made for securely clamping the saw-blade andguiding the file-holder in its movements, so that the file or filescarried thereby will be positively controlled to operate in a true path.

Another object is to provide an apparatus which admits of the use of aplurality of files and their change of position to cut at differentangles and to be reversed to first act upon teeth set in one directionand then upon teeth set in the opposite direction, whereby the 0 erationof sharpening a saw may be rapidly performed.

Still another object of the invention is to provide a saw-filingapparatus in which provision is made for adjusting the file carriage orsupport to adapt the position thereof to be accurately changed to setthe files for operating upon the teeth of saws varying in number to theinch, and alsofor setting the files to operate upon alternate teeth,whereby all of the teeth of a saw set in one direction may be operated uon in one direction of movement of trave of the carriage upon itssupporting-frame and the remaining teeth operated upon in' the oppositedirection of travel of the carriage.

The referred embodiment of the invention is i lustrated in theaccompanying drawings, in which Figure 1 is a perspective view of theimproved saw-sharpening apparatus, showing a portion of a band-sawclamped in position to be sharpened. Fig. 2 is a top plan view thereof,showing in full and dotted lines the adj ustability of the filecarrierbars for operating upon oppositely-set teeth. Fig. 3 is a cross-sectionthrough the supporting-frame,

' showing the file-carrier in end elevation, said carrier being arrangedat right angles to the frame to more clearly disclose the construction.Fig. 4 is a similar view looking toward one of the ends of thesupporting-frame.

Fig. 5 is a. detail side elevation of the guiderod and slidingguide-bracket of the file-carrier, and Fig. 6 is a detail view of one ofthe stops and gage members of, the file-carrier.

' Referring now more particularly to the drawings, the numeral 1represents a. supporting-frame, said frame comprising two upright endstandards 2, each of said standards consisting of an upper bracketportion 3 provided with a depending stationary arm 4, .the arms 4 of thetwo standards being sultably connected at their lower ends to astationary clamping-bar 5. To each bracket portion 3 is pivotallconnected a swinging arm 6, which norma ly lies parallel with the arm 4,the two arms 6 carrying at their lower ends a clamping-bar 7, which isthus rendered adjustable toward and from the bar 5, whereby a saw-blademay be positioned and clamped between said bars. The contiguous abuttingedges of each stationary arm 4 and its companion swinging arm 6 areformed with registering notches to provide an opening or passage 8 ofproper form for the passage of the saw and reception of. the toothededge thereof. The swinging arms 6 are adapted tobe secured with the bar7 in clamping position by fastening devices comprising stirrups or yokes9, pivoted tothe arms 4 and loose y embracing the arms 6, said stirrupsbeing of sufficient length to permit the arms 6 to be swung outwardsufficiently to admit a sawblade between the bars 5 and 7. The stirrupsor yokes carry clamping-screws 10 to engage the arms 6 and secure thebar 7 rigidlyin clamping position. The bracket portions 3 of thestandards 2 sup ort a guide rod or bar 1 1 extending longitudmally abovethe clamping-bars and in'parallel relation therewith.

Arranged between the clamping-bars and the guide-rod 11 is a file holderor carriage 12, which is of inverted-U form and provided at its endswith spaced depending parallel arms 13 and 14, in the upper portions ofwhich are journaled bearing-rollers 15. The carriage 12 extendstransversely of the frame 1 and is swiveled by a pivot-bolt 16 to thebase portion of .an open rectangular sliding bracket 17, provided in itsend walls with openings for the passage of the guide-rod 11, wherebysaid bracket is slidably mounted thereon and adj ustably supports thecarriage. Within the upper portion of the bracket is arranged aspring-clamp 18, having its ends bent .to form bearing portions engagingthe guide-rods 11 and its central portion bowed ,pending arms 13 and 14of the carriage 12,

the bar. 20, its depending ends 21, and the un- ..derlying.carrierbar 22preferably being in- .tegrally constructed in the form of anoblongrectangular, open, frame; but they may .be

constructed and connected in anyother preferred manner.

Arranged onoppositesides of the carriage and in :parallel relation withtheintermediate fileecarrier bar-22 are side carrier-bars 23 and 24, theopposite extremities of said bars. being connected for simultaneousmovement by transverse links 26, each link beingcentrally pivoted by apivot-bolt 27 to the contiguous ends of theintermediate cross-bar 22 andterminally pivoted to the adjacent ends of the a side carrier-bar byclamping-screws 28. Each file-carrier bar is provided. with a-pair ofdepending hangers 29, supporting asharpening- .file30. These hangers maybe suitably constructed to permit of the adjustmentof the file, ifdesired.

Arranged .at diagonally. opposite points upon the carriage 12 arestopand gage members31 and 32, each consisting of a bracket- ,plate having.a depending arm on which is I journaled a bearing-roller 33, the upperportion of the bracket being formed with transverse slots 34 for thereception of fasteningbolts 35 toadjustably secure the same to thecarriage. As shown,. the member 31 is secured to one of the arms 13 ofthe carriage .and the member 32 to the arm 14 on the opposite side ofthe-carriage from-said member 31, thus bringing the rollers33 inposition to respectively. engage the outer edges of the fixed and swin1n clamping-bars 5fand 7.

' In practice the files 30 are disposed apart a distance equivalent tothe distance between two.teeth of a saw of any prescribed size,so .that,they will operate, respectively, .on alter-1 .nate teeth in order toprovide for. the opera tion of, the device upon avpluralityof teeth atatime inzsuch manner that only those teeth whichaare :set in. the samedirection will be .acted upon. Inoperation the carriage 12 is swung onits pivot-bolt 16 to setit obliquely.

to the plane of the frame 1 toaccord with the angleof inclinationof oneset of. teeth of the saw-blade, its adjustment to. the desired positionbeing gaged by the gaging members 31. and 32, the rollers 33 of whichcome. into .contactwith the edges of the bars 5 and 7 and thus determinethe. proper angle. Prior.

to the adjustment of the carriage 12 to such position theclamping-screws 28 are loosened, so that the links 26 will adjust theside carrier-bars 23 and 24 in opposite directions parallel with theintermediate bar 22 and at the same angle as said intermediate bar tothe saw, thescrews 28 being tightened after the parts have been adjustedto hold them permanently in adjusted position. The angle of adjustmentofthe carriage 12 may, it is obvious, be regulated by adjusting.the;.gage members 31 and ,32. .It will thus .beobserved that thecarriage and file -h0lders.may be adjusted to position the filesfor'operation upon three teeth of the. saw,.-so thatin. onedirectionofmovement of the carriage alongthe frame all those teeth which projectin. the same direction may be quickly and conveniently sharpened'andthat by. thenreversing the angular position of the carriage the.saws maybearranged to operate .nponthose teeth of the saw which; project in the.opposite direction on the return movement of the carriage. As beforestated, the files operate upon alternate teeth, so thatafter. they havein one direction no furtheradjustmenhwill be required. to operate. upon.the correspondingly-set teeth throughout the-entirelength of the-saw.Inadjusting the carriage 121for operation it .will be understoodthatit.-is swung on. its pivot-bolt l6.. and-that when swung to. apositionatright.- angles to the supporting-frame the clamping-bar. 7 may beadjusted without resistance'for the insertion or removal of the saw. Toadjust. the carriage for operating upon. teeth; projecting-in differentdirections, it is simply. necessary to swing the carriage to,positionsoblique to the supporting -frame and at reverse -.anglesthereto. relative. to the transverse. center: of .the frame, asindicated in full. and broken lines in, Fig. 2.

In order to enable. the depth of cutof the files to be regulated, thesaw gages36are provided forapplication to: the opposite ends of theclamping-bar-7,. each gage comprising-m zu-shaped clamp adapted to-be'slid..o.nto the bar 7 and provided with a clamping-:screW-B? to draw itin clamping engagementtherewith,

said screw proj ecting. upwardly and, carrying a gaging or spacing piece38, adjustable there- ,on and ada tedto project over. the space betweenthears 5 and? to limitthe upward projection of the saw-bladetherebetween,-so that the position of the blade may be gaged to out theteeth-any desired depth. ;-Af.ter=.a group of three teeth. has beensharpenedzby the files the clamp, 18 is relaxed: and the bracket 7slidin one direction :onthe-other along the guide 11 to. set the.carriage for. operation upon the next gro.up,..as-. berea'dilyunderstood, and this operation is con- .tinueduntil alltheteethof;the..saw have been filed. v 1

. been onceadjusted tooperatezu-pon teethset In order to enable themovement of the carriage on the guide-bar 11 to be gaged with accuracyfor setting the files for operating upon saws having teeth spaced atdifferent distances apart, I provide upon the sliding bracket 17 apivoted gage-piece 39, provided with a threaded gage-pin 40, having apointed end to engage and seat in sets of gageseats ll and 42, formed inthe bar 11. The seats of these sets 41 and 42 are arranged at differentdistances apart to enable the carriage 17 to be adjusted with greataccuracy to set the files for operation upon saws in which the teeth arespaced a greater or less dis tance apart. Of course it will beunderstood that as the files are primarily arranged to operate uponalternate teeth the teeth of both sets are arranged apart a distanceequivalent to the distance between the centers of two adjacent teeth setat the same angle, or, in other words, the width of two teeth apart,thus enabling the carriage while adjusted to travel in one directionalong the bar 11 to successively act upon adjacent groups of teethprojecting in one direction and when adjusted to travel in the reversedirection on the bar to successively act upon adjacent groups of teethprojecting in the opposite di rection.

It will thus be seen that the invention provides a saw-filing apparatuswhich is simple of construction, convenient in use, and comparativelyinexpensive of production and by means of which the operation ofsharpening the teeth of a saw may be expeditiously performed. By the useof the gaging devices unskilled labor may be employed at a lowcompensation to perform the sharpening operation, which when carried onin the ordinarymanner requires the employment of highlyskilled labor.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and mode of operation of theinvention will be understood without a further extended description.

Changes in the form, proportions, and minor details of construction maybe made within the scope of the invention without departing from thespirit or sacrificing any of the advantages thereof.

Having thus described the invention, what is claimed as new is 1. In asaw-filing apparatus, the combination of a supporting-frame providedwith saw-clamping means, a bracket supported by and slidablelongitudinally of the frame, a carriage pivotally supported by saidbracket to swing at an angle to the frame and pro vided with a guideway,a saw-carrier mounted to reciprocate in said guideway and having acentral file-supporting member, side saw-supporting members arranged inparallel relation to said central supporting member, and linkconnections between the central and side supporting members, saidconnections being adapted to shift said side supporting members tomaintain parallel relation between the same and central supportingmember when the carriage is swung to different angles with relation tothe frame, said link connections having means for fastening the sidesupporting members in adjusted position.

2. In a saw-filing apparatus, the combination of a supporting-frameprovided with a guide rod or bar, a bracket slidably mounted on said rodor bar, a carriage pivoted to the bracket, a reciprocating carriermounted on the carriage, an intermediate file-carrier bar connected withsaid carrier, side carrier-bars disposed in parallel relation to theintermediate carrier-bar, and links pivotally connecting the ends of thecarrier-bars, the pivotal connections between the links and carrierbarsbeing provided with securing means to clamp the bars in adjustedposition.

3. In a saw-filing apparatus, the combina tion of a supporting-frame, acarriage slidably and pivotally mounted upon the frame, the latter beingprovided with clampingj aws, adjustable gage members on the carriage toabut against said jaws when the carriage is set at the proper angle, andfiles operatively supported by the carriage.

4. In a saw-filing apparatus, a frame having a fixed and an adjustablejaw, and a gage carried by the movable jaw to regulate the insertion ofthe saw and de th of out, said gage comprising a clamp em racing thejaw, a screw carried by said clamp, and a gagepiece adjustablymountedupon the screw.

5. In a saw-filing apparatus, a frame having a guide bar or rod providedwith sets of seats, the seats of one set being arranged a greaterdistance apart than the seats of the other set, a bracket slidablymounted on said rod or bar and provided with means for securing itthereto, a carriage pivotally connected with the bracket, areciprocating file-holder IIO held and guided by the carriage, and aplate pivotally connected with the bracket and carrying a point toengage the said seats in the rod or bar.

In testimony whereof I aflix my signature in presence of two witnesses.

CHARLES H. REYNOLDS. Witnesses:

EDWARD SMITH, I/VM. BLAoKwELL.

